Physics
If the length of a simple pendulum is halved then its period of oscillation is

Doubled
Halved
Increased by a factor 2
Decreased by a factor 2

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Physics
Which of the following occurred first ?

Albert Einstein propounded the General Theory of Relativity
Max Planck unveiled the Quantum Theory
Guglielmo Marconi sent out the first wireless signals
Wright Brothers successfully flew an aircraft

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